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  1. Scott Danforth

    Conversion advice

    Your vintage is a mechanical shift (1981-1984), not the earlier hydro-mechanical shift (1978-1980) If you want to look at the stringer, look at the following problem areas: Raw water housing leaks 3-piece vertical drive shaft splines Ball gears Tilt motor and hammer coupling The only source...
  2. Scott Danforth

    Conversion advice

    And marine head gaskets, brass core plugs, marine distributor, marine front accessories. Plus a manual transmission flywheel The only thing you can use from the blazer is the block and heads You still need a Mercruiser transom shield, all the accessories, the Mercruiser wiring, and shift...
  3. Scott Danforth

    Conversion advice

    You can use the block and heads. You need a whole bunch of marine bits to make it work. You are no further ahead than your 1984 block and heads
  4. Scott Danforth

    Conversion advice

    The OMC shift cable is about $1000
  5. Scott Danforth

    Towing Races???

    https://images.app.goo.gl/RceYU5s3PYLYoBhR6
  6. Scott Danforth

    Towing Races???

    They run them at slinger and 141 speedways in Wisconsin Always fun to watch Along with school bus races, chain races (2 cars chained together, on has steering, one has power/brakes), figure 8s
  7. Scott Danforth

    Conversion advice

    There have been about a hundred outboard conversions started on iBoats. About a dozen completed, about 1 or 2 that came out well. The transom must be reinforced to use a pod As for your existing motor, other than the short block, there is nothing that could be used if you convert to an SEI...
  8. Scott Danforth

    350 Mag MPI Thermostat Replacement ?

    Stant is the manufacturer of the OEM thermostat The sleeve has been both plastic and copper (cut from tubing)
  9. Scott Danforth

    Conversion advice

    unfortuneately, fiberglass boats older than 15 years old should be considered projects. all will need work. a boat restoration is iffy at under 10k as Bondo stated, find a junk boat with a good motor. (mid 90's forewinns bayliners, searays, etc.) and get the whole thing for $2k or less...
  10. Scott Danforth

    350 Mag MPI Thermostat Replacement ?

    Yes
  11. Scott Danforth

    Ultrasonic cleaners?

    Since today's carb cleaners suck compared to the cleaners of the 80's. For all really cruded up carbs I do a soak in acetone (metal parts only. Followed by cleaning in berrymans (plastic part safe) Acetone will dissolve most gummy fuel deposits quickly Be careful with simple green..... It...
  12. Scott Danforth

    Conversion advice

    Boat manufactures use motors they have in the warehouse. For example. GM quit building the 8.1 Big Block in 2008. Yet they were being installed in new boats as late as 2014 Your motor is a 1981-1984 vintage that had a stringer drive
  13. Scott Danforth

    Conversion advice

    You have a boat that had a stringer drive. The only thing usable is the block and heads
  14. Scott Danforth

    Conversion advice

    This says it was a stringer drive That means the motor and drive were left over 1984 parts. Not the 1985 and later cobra drive Is the motor painted silver, or charcoal?
  15. Scott Danforth

    Pretty sure I was sent Gen VI, not Gen V 454

    Gen V timing cover and Gen VI only differ by number of bolts Gen V has 10 bolts Gen VI has 6 Your boat doesn't have an EGR, so the EGR port in the head never comes into play. Gen V head do not have EGR ports. Gen V heads only fit Gen V blocks. Gen VI blocks will take all Gen VI heads, and...
  16. Scott Danforth

    Conversion advice

    You need much more than that to convert a stringer to SEI
  17. Scott Danforth

    Pretty sure I was sent Gen VI, not Gen V 454

    A heat exchanger means the motor has ethylene glycol running thru it vs raw lake water. From a winterizing point of view, much easier. From an operational temperature point of view, less engine wear, better efficiency Your old motor was frozen up for a reason.
  18. Scott Danforth

    Conversion advice

    If you had the big square hole, the boat had a stringer drive Basically nothing related to that motor, drive, controls is really compatible with the SEI drive other than the short block. The best conversion is to remove everything OMC and get a 1992 or newer Mercruiser long tail (motor and...
  19. Scott Danforth

    Pretty sure I was sent Gen VI, not Gen V 454

    Since this is a basically a new install. I would suggest adding a heat exchanger
  20. Scott Danforth

    Multiple 260s, 270s, and 280s

    Soliciting in open forums is against the rules. Once your friend list the items on eBay or CL, you can share a link to the listings But you can not openly solicit
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